Or clause in firebase Java Android

Who knows how I can make a common "or" in the where clause in firebase?

I need to do this in the query because I send the query to the adapter. So, I mean, I can't add a listener and check one value and then another. I need to point to the full query of the result in the query

What I have is:

chat1:
   user1Id: "1"
   user2Id: "2"
   bothUsers: "1_2"

chat2:
   user1Id: "2"
   user2Id: "4"
   bothUsers: "2_4"

I need to get all chats of the user with ID "2". I'm trying to query as follows:

userLogged = 2;
Query queryRef = firebase.orderByChild("user2Id").equalTo(userLogged);

However, when user 2 is in user2id, it will only get chat. But in the above example, when user 2 is in user1id (chat2), it will not get it. I need to get it. How can I do this?

resolvent:

In NoSQL database, you usually need to model the data according to the needs of the application (see this article for a detailed description of NoSQL data modeling). Therefore, if you need all chat lists of a specific user, please store the list:

/userChats
  user1Id
    chat1: true
  user2Id
    chat1: true
    chat2: true
  user4Id
    chat2: true

This process is called informalization, which is covered in the article linked above in firebase documentation on structuring data and blog post